P. caroliniana Walt.,

2 n =14:

1, U.S.A., Georgia, R.K. Godfrey 68477 (VPI), JF951079, JF951101; 2, U.S.A., Lousiana, R.D. Thomas 133507 (VPI), JF951080, –; 3, U.S.A., Texas, T. Boulware 153320327 (US), JF951065, –.